M2Eclipse Debug Maven depencies'Source Code Not Found

It is a bug for not finding Maven depencies' source code when debug using m2clipse jetty:run
https://bugs.eclipse.org/bugs/show_bug.cgi?id=384065
3 ways to solve the above problem
http://stackoverflow.com/questions/9474981/java-debugging-source-not-found/11452410#11452410
Personally I think using eclipse remote debug is preferable. 

How to remote debug:

first start up the Remote Java Application (the debugger ) as a debug server in your eclipse, ie socket listen,

then use jetty:run to run your program (the debuggee) as a debug client with "-Xdebug -Xrunjdwp:transport=dt_socket,address=127.0.0.1:8000"

127.0.0.1:8000 is debugger's ip address and listening port

reference the following for  remote debug detail
http://www.ibm.com/developerworks/library/os-eclipse-javadebug/index.html